Abstract
Experiments were conducted on the transonic flow about a supercritical airfoil model, in which surface static and pitot pressure measurements were combined with data from holographic interferograms. The independent measurement of pitot pressure and density permits computing flowfield properties in the vicinity of the trailing edge and in the wake without recourse to static pressure assumptions. The data show significant static pressure gradients normal to the viscous layers in this region, extending approximately 10% chord downstream of the trailing edge. Comparisons are made between the experimental data and predictions from numerical computations.
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